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Closed Loop Engine Control for Regulating NOx Emissions, Using a Two-Dimensional Fuel-Air Curve

Abstract: 

An engine control strategy that ensures that NOx emissions from the engine will be maintained at an acceptable level. The control strategy is based on a two-dimensional fuel-air curve, in which air manifold pressure (AMP) is a function of fuel header pressure and engine speed. The control strategy provides for closed loop NOx adjustment to a base AMP value derived from the fuel-air curve.

Patent Number: 
7,168,411
Date Of Issue: 
01/30/2007
Inventors: 

Gary D. Bourn; Jack A. Smith; Jess W. Gingrich